Danfoss FC 300 Profibus

FC 300 Profibus
Parameters
 Object and Data Types Supported by FC 300
Data types supported by FC 300
Data type Short name Description
3 I2 Integer 16
4 I4 Integer 32
5 - Unsigned 8
6 O2 Unsigned 16
7 O4 Unsigned 32
9 - Visible string
10 - Byte string
33 N2 Standardized value (16 bit)
35 V2 Bit sequence
41 E2 Byte
42 C4 Word
 Standardized Value
The frequency reference value is transmitted to the frequency converter in the form of a 16-bit word. The
value is transmitted in integers (0-32767). The value 16384 (4000 Hex) corresponds to 100%. Negative
numbers are formed with the aid of the twos complement.
0% = 0 (0h), 100% is 2
14
(4000h)
Data type N2
Range -200%...+200%
Resolution 2
-14
= 0.0061%
Length 2 bytes
Notation: 2s complement notation.
MSB is 1st bit after sign bit in 1st byte.
Signbit=0=positivenumber
Sign bit = 1 = negative number
Bit 8 7 6 5 4 3 2 1
Byte 1 SIG N 2
14
2
13
2
12
2
11
2
10
2
9
2
Byte 2 2
7
2
6
2
5
24 2
3
2
2
2
1
2
0
Bit sequence
16 boolean values for control and presentation of user functions.
Notation is binary
Bit 8 7 6 5 4 3 2 1
Byte 1 15 14 13 12 11 10 9 8
Byte 2 7 6 5 4 3 2 1 0
68
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